fix：会话id存入localStorage

src/layouts/Navbar/Navbar.tsx

@@ -12,6 +12,7 @@ import { withAuth } from '@/auth/withAuth'
 import { NAV_BAR_ITEMS } from '@/config/nav'
 import { useAppDispatch, useAppSelector } from '@/store/hook'
 import { isMobile } from '@/utils'
+import { safeLocalStorageSetItem } from '@/lib/utils'
 // import { User } from './components/User'
 
 interface NavbarProps {
@@ -135,9 +136,12 @@ const NavbarBase: React.FC<NavbarProps & WithAuthProps> = ({ isHistoryVisible, c
     }
   }, [shouldNavigateToNewConversation, currentConversationId, currentToolId, navigate, dispatch])
 
-  // keep latest conversation id in sessionStorage for cross-page returns (e.g., from collect)
+  // keep latest conversation id in localStorage (persists across page closes) and sessionStorage (for cross-page returns)
   useEffect(() => {
     if (currentConversationId) {
+      // 保存到 localStorage，关闭页面后仍能恢复
+      safeLocalStorageSetItem('currentConversationId', currentConversationId)
+      // 同时保存到 sessionStorage，用于跨页面返回（如从收藏页返回）
       sessionStorage.setItem('currentConversationId', currentConversationId)
     }
   }, [currentConversationId])